@spec loopback_host?(term()) :: boolean()

@spec normalize(term()) :: {:ok, String.t()} | {:error, :invalid_uri}

@spec protected_resource_metadata_uri(String.t()) ::
  {:ok, String.t()} | {:error, :invalid_uri}

@spec redirect_allowed?(term(), term()) :: boolean()

@spec same_origin?(term(), term()) :: boolean()

@spec scoped_client_id?(term(), term()) :: boolean()

@spec valid_redirect?(
  term(),
  keyword()
) :: boolean()

@spec web_url?(
  term(),
  keyword()
) :: boolean()